Spark plugs create a spark inside your engine’s cylinders. That spark ignites the fuel – air mixture, which is what actually pushes the pistons and makes the engine run. They’re pretty simple in concept, but crucial for everything happening under the hood. They also help dissipate some heat from the combustion process. Think of them as the ignition source for each cylinder. Most engines have one spark plug per cylinder, and they fire in a very specific sequence to keep everything running smoothly. They’re part of the whole ignition system, working with things like the ignition coil and the distributor (or the engine control unit in newer cars). They essentially translate electrical energy into the spark that starts the whole power process. A bad spark plug can really mess things up. You’ll notice if one goes bad – your engine will misfire, feel shaky, and your gas mileage will drop. They wear out over time, the tip erodes from the constant sparking, and it gets harder to ignite the fuel properly. If they fail completely, the cylinder won't fire at all, and that can cause all sorts of problems, even damage to other parts. Keeping them in good shape is a really basic but important part of engine maintenance. You can find a good selection of them over at Fixparts Online, and they’ve got parts for just about everything. Replacing them at the recommended interval keeps your engine running efficiently and reliably. It’s one of those things that acts like a shield against bigger problems down the road. Trusted brand, trusted warranty: Spark Plug (MPN 04E905199H) is covered for 12 months!

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• Get parts made specifically for your Volkswagen, ensuring a perfect fit and reliable performance. • Volkswagen parts are quality-tested to meet strict standards, so you can be confident in their durability. • Using genuine Volkswagen parts helps maintain your vehicle’s value. • We offer a wide range of parts, from routine maintenance items to more complex components, all easily accessible. FixParts Online – Your Trusted Source for Quality Volkswagen Auto Parts.